PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1026-20Insulator,washer

Ward Leonard Ct Llc · NSN 5970-00-548-9604 · FSC 5970 · No Item Name Available
Verified by PartsTable
NSN 5970-00-548-9604 — this item is cataloged by the U.S. Government under National Stock Number 5970-00-548-9604. Primary manufacturer part number: 1026-20.
Features
  • Insulator,washer — FSC 5970
  • Inside Diameter: 0.500 INCHES NOMINAL IN
  • Style Designator: ROUND, FLAT
  • Material: MICA OVERALL
  • Outside Diameter: 1.000 INCHES NOMINAL IN
  • 4 verified cross-references
  • Primary manufacturer: Ward Leonard Ct Llc
Applications
  • Structural fastening and assembly
  • Equipment mounting
  • Panel and housing attachment
  • Applications requiring Mica Overall construction
General Description

The Insulator,washer, cataloged under National Stock Number 5970-00-548-9604, is classified within Federal Supply Class 5970 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Ward Leonard Ct Llc. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5970-00-548-9604
Primary Part Number1026-20
Item NameInsulator,washer
FSC / FSG5970 / 59 — No Item Name Available
ManufacturerWard Leonard Ct Llc
StatusCANCELLED
Inside Diameter0.500 INCHES NOMINAL IN
Style DesignatorROUND, FLAT
MaterialMICA OVERALL
Outside Diameter1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
3040-00-128-7724102620 INTERCHANGEABLE
Gearshaft,spur
Astronautics Corporation of America
5325-00-282-007701715 INTERCHANGEABLE
Ring,retaining
Defense Logistics Agency Dba Defense Supply Center Philadelphia
6250-00-299-5962194834A2 INTERCHANGEABLE
Starter,fluorescent Lamp
Elsag Bailey Inc
6105-00-971-20337145-C7609 INTERCHANGEABLE
Motor,alternating Current
Skurka Aerospace Inc
5330-01-159-2800102620 INTERCHANGEABLE
Packing,preformed
Dana Commercial Vehicle Products, Llc
5998-01-290-5477102620 INTERCHANGEABLE
Circuit Card Assembly
Eaton Aerospace Llc Div Fluid and Electrical Distribution Division
3010-01-326-374210-2620 INTERCHANGEABLE
Control,motor-Transmission
L3 Technologies, Inc.
Cross-Reference Index
Part NumberManufacturer
15A352-5 Bechtel Technical Services Inc Machinery Apparatus Opn (USA)
0171-5 Lockheed Martin Corporation Div Rms (USA)
0171-5 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
1026-20 PRIMARY Ward Leonard Ct Llc (USA)
Related Parts
3040-00-128-7724INTERCHANGEABLE
GEARSHAFT,SPUR
102620
5325-00-282-0077INTERCHANGEABLE
RING,RETAINING
01715
6250-00-299-5962INTERCHANGEABLE
STARTER,FLUORESCENT LAMP
194834A2
6105-00-971-2033INTERCHANGEABLE
MOTOR,ALTERNATING CURRENT
7145-C7609
5330-01-159-2800INTERCHANGEABLE
PACKING,PREFORMED
102620
5998-01-290-5477INTERCHANGEABLE
CIRCUIT CARD ASSEMBLY
102620
3010-01-326-3742INTERCHANGEABLE
CONTROL,MOTOR-TRANSMISSION
10-2620

Frequently Asked Questions

What is NSN 5970-00-548-9604?

NSN 5970-00-548-9604 is a Insulator,washer, manufactured by Ward Leonard Ct Llc, classified under FSC 5970 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5970-00-548-9604?

NSN 5970-00-548-9604 has 4 cross-referenced part numbers: 15A352-5 (Bechtel Technical Services Inc Machinery Apparatus Opn), 0171-5 (Lockheed Martin Corporation Div Rms), 0171-5 (Lockheed Martin Corporation Div Rms - Mitchel Field), 1026-20 (Ward Leonard Ct Llc).

What NSN replaces 5970-00-548-9604?

There are 7 known substitutes for 5970-00-548-9604: 3040-00-128-7724, 5325-00-282-0077, 6250-00-299-5962 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1026-20?

Key specifications for 1026-20: Inside Diameter: 0.500 INCHES NOMINAL IN; Style Designator: ROUND, FLAT; Material: MICA OVERALL; Outside Diameter: 1.000 INCHES NOMINAL IN. 5 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5970-00-548-9604 still in active supply?

NSN 5970-00-548-9604 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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